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PEB4065T V4.0-PEB4065TV4.0
HV-SLIC (High Voltage Subscriber Line...
ICs for Communications
High Voltage Subscriber Line IC
HV-SLIC
PEB/F 4065 Version 3.0
Data Sheet 03.98
DS 1
SLICOFI® is a registered trademark of SIEMENS AG.
For questions on technology, delivery and prices please contact the Semiconductor Group Offices
in Germany or the Siemens Companies and Representatives worldwide: see our webpage at http:/
/www.siemens.de/Semiconductor/address/address.htm.
Edition 03.98
Published by Siemens AG,
HL SP,
Balanstraße 73,
81541 München© Siemens AG 1998.
All Rights Reserved.
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systems2 with the express written approval of the Semiconductor Group of Siemens AG.A critical component is a component used in a life-support device or system whose failure can reasonably be
expected to cause the failure of that life-support device or system, or to affect its safety or effectiveness of that
device or system.
PEB/F 4065
Table of ContentsPageOverview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41.1Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
1.2Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.3Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Electrical Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112.1Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
2.2Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
2.3Thermal Resistances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
2.4Electrical Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
2.5AC-Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Package Outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
High Voltage Subscriber Line IC
HV-SLIC
PEB/F 4065
Version 1.1SPTOverview
The High Voltage Subscriber Line IC PEB4065 is a
rugged and reliable interface between the telephone
line and the SLICOFI, a low voltage Subscriber Line
Interface and Codec Filter IC. It is fabricated in a Smart
Power Technology offering a breakthrough voltage of
at least 170V.
The PEB4065 provides battery feeding between24V and –80V and internal ringing injection with a
differential ring voltage up to 85Vrms. In order to
achieve these high amplitudes an auxiliary positive battery voltage is used during
ringing. This voltage can also be applied in order to drive very long telephone lines.
The SLIC is designed for a voltage feeding – current sensing line interface concept and
provides sensing of transversal and longitudinal current on both wires.
A power-down mode offers reduced power consumption at full functionality; in the power
denial mode the device is switched off turning the line outputs to a high impedance state.
1.1FeaturesHigh voltage line feeding Internal ring and metering signal injectionSensing of transversal and longitudinal line currentReliable 170V Smart Power TechnologyBattery voltage –24V…–80VBoosted battery mode for long telephone lines
and up to 85 Vrms balanced ringingPolarity reversalSmall P-DSO-20-5 power package
PEB/F 4065
Overview
1.2Functional Description
Figure 1Block Diagram
The PEB 4065 supports AC and DC control loops based on feeding a voltage Vab to the
line and sensing the transversal line current Iab (Figure2).
It converts a unipolar input voltage V2W into a differential output voltage Vab with an AC
receiving gain of
Gr=VabAC/V2WAC=40.
This is accomplished by converting the input voltage to a current which is used to
transpose the low voltage signals of the interface to the high voltage line feeding section.
This current is reconverted to two voltages of opposite phase which are referenced to
the positive and negative supply voltage, respectively. Thus the differential DC
line-voltage in all normal polarity modes except ringing is related to the input voltage byabDC=VBAT–VHINT+Vfix–40×V2WDCBATnegative battery voltageHINTinternal positive supply voltagefixinternal voltage drop of supply filter (appr. 2V).
Depending on the operation mode, VHINT is switched either to VH (VHINT=VH–1V) or to
BGND (VHINT=–0.5V) via the supply switch.
PEB/F 4065
Overview
Controlled by C2, the polarity of Vab can be reversed and the DC-line-voltage then isabDC=–(VBAT–VHINT+Vfix–40×V2WDC).
The transversal and longitudinal currents are measured in the buffers and scaled images
are provided at the IT and IL pin, respectively:T=(Ia+Ib)/100=Iab/50IL=–(Ia–Ib)/100=–ILong/50.
The PEB 4065 operates in four modes controlled by ternary logic signals at the C1 and
C2 input. Additionally, in the active modes a polarity reversal of the output voltage can
be programmed (see Table1).
Power down (PD): Power consumption is reduced by decreasing bias current levels. All
functions operate at some small performance reductions. In this mode each of the line
outputs can be programmed to show high impedance. HI b switches off the TIP buffer,
while the current through the RING output still can be measured by IT or IL. Programming
HI a reverses the polarity and switches off the RING buffer.
Conversation (CONV): This is the regular transmit and receive mode for voiceband and
teletax. The line driving section is operated between VBAT and BGND.
Boosted battery (BB): In order to drive longer telephone lines an auxiliary positive battery
voltage VH is used, enabling a higher DC-voltage across the line.
Ringing (RING): This mode also uses the auxiliary voltage VH in order to provide a
balanced ring signal of up to 85Vrms. The ring tone without any DC-component has to
be switched to the V2W input. Internally a DC-voltage is superimposed. This voltage is
proportional to the total supply voltage VH–VBAT and amounts to typically 23V atH–VBAT=120V. The current sensing functions are available for ring trip detection.
The Power Denial (PDN) state is intended to reduce power consumption of the linecard
to a minimum: the PEB 4065 is switched off completely by connecting the PDN pin toDD, no operation is available.
With respect to the output impedance of TIP and RING two PDN-modes have to be
distinguished. A resistive one (PDNR) provides a connection of 15kΩ each from TIP to
BGND and RING to VBAT, respectively, while the outputs of the buffers show high
impedance (Figure3).
The other mode (PDNH) offers high impedance at TIP and RING. It is entered when, in
addition to connecting PDN to VDD, the programming inputs C1, C2 are tied to VIL.
PEB/F 4065
OverviewNormal PolarityRP...Reverse Polarity
HI a RPRing wire set to high impedance
HI b NPTip wire set to high impedance
Figure 2Definition of Output Current Directions
Table 1Programming of Operation Modes
PEB/F 4065
Overview
Figure 3TIP and RING Impedance in Power Denial
PEB/F 4065
Overview
1.3Pin Description
Figure 4Pin Configuration (top view)
Table 2Pin Definition and Functions
PEB/F 4065
Overview
Table 2Pin Definition and Functions (cont’d)
PEB/F 4065
Electrical CharacteristicsElectrical Characteristics
2.1Absolute Maximum Ratings
Note:Maximum ratings are absolute ratings; exceeding only one of these values may
cause irreversible damage to the integrated circuit.See Test Figure 10.
Table 3
PEB/F 4065
Electrical Characteristics
2.2Operating Range
Note:In the operating range the functions given in the circuit description are fulfilled.
2.3Thermal Resistances
Table 4
Table 5
PEB/F 4065
Electrical Characteristics
2.4Electrical Parameters
Min/max values are valid within the full operating range. If PEB- and PEF-specifications
are different, both values can be found in the respective column.
Testing is performed according to the test figures with external circuitry as depicted in
Figure4. Unless otherwise stated, load impedance RL=600Ω. Test temperatures are
25 and 70°C for PEB, –40, 25 and 85°C for PEF-type (without heatsink). DC line
voltages refer to VBAT=–70V and VH=+60V.
Table 6Supply Currents and Power Dissipation
Power Denial
Power Down V2W=–0.5V1)
Conversation, Normal and Reverse Polarity V2W=–0.5V1)
PEB/F 4065
Electrical CharacteristicsIBAT and IH depend on the value of V2W:
IBAT(V2W)=IBAT(0)+|V2W|/440Ωtyp. (PD, CONV, BB)
IH (V2W)=IH(0)+|V2W|/440Ωtyp. (BB)
Boosted Battery Mode Normal and Reverse Polarity V2W=–0.5V1)
Ringing Mode Normal and Reverse Polarity V2W=0V
Table 6Supply Currents and Power Dissipation (cont’d)
PEB/F 4065
Electrical Characteristics
Table 7DC-Characteristics
Line Termination TIP, RING
